Claude j



Patented Dec. 25, 1923.

CLAUDE J.

HOLSLAG, OF SOIITH'ORANGE, NEW JERSEY, ASSIGNOR TO ELECTRIC ARC CUTTING & WELDING COMPANY, OF NEWARK, NEW JERSEY.

WELDING ELIWTBODE.

No Drawing T all whom it may concern:

Be it known that I, CLAUDE J Horsmq,

a citizen of the United States, residin at South Orange, in the county of Essex, tate 6 of New Jersey, have invented certain new and useful Improvements in Welding Electrodes, of which the following is a description.

This invention relates to an electrode used for welding purposes, electric arc welding in particular, and the electrode is especially adapted for use in welding or repairing parts where increased strength and toughhardness is desirable.

It has been proposed heretoforeto use as electrodes for this class of work rods containin considerable manganese, in addition to die other ingredients usually found in steel, such as iron, carbon, silicon, sulphur and phosphorus. Nickel has also been proposed in combination with the. above mentioned ingredients as a welding rod for use with the oxy-acetylene blow type. While in the ordinary mild steel electrode having a low content of carbon such elements as manganese, silicon, sulphur and phosphorus are not particularly objectionable; yet, in my welding electrode, I have found it to be an advantage to keep the no sulphur and phos horns low, for example 1 less than .035. anganese and silicon are found to be desirable up to the amounts ordinarily met with in mildsteel electrodes.

However, I have found that, the use of conl5 siderable manganese for the class of service referred to above is open to many objections and where nickel is used instead of manganese, I have discovered there is a considerable tendency for the weld to be interl0 laced with fine cracks, butby the addition of chromium these cracks are entirely eliminated and a clean deposit is obtained, and a very high tensile strength, yet a deposit which can be machined but is tough-hard.

By way of illustration, but not of limitation, on certain classes of work I have ob .tained most excellent results by the use of i to 2% per cent chromium with, nickel be- A tween 1 and 4 per cent and carbon .4 to .6 per cent with the small amount of manganese, silicon, sulphur and phosphorus I which are ordinarily present in alloy steels.

For certain, classes of work, I may use in the preparation of the e ectrode, a small Application filed Kay 22,

1922. Serial No. 582,818.

amount of vanadium which acts as a scaven er.

It will be understood that I may use my improved welding electrode either bare or with an suitable covering, such for examle as isclosed in my patent application 258,197, filed October 15, 1918, also it will be evident to one skilled in the use of metals that the composition of the welding electrode may be varied over a wide limit to meet various conditions without departing from the spirit of my invention and the scope of the appended claims.

Havin thus described my invention, what I c aim is:

1. A weldin electrode comprising an alloy of stee containing nickel and chromium, the latter, in such proportion as to prevent cracking of the deposited metal on cooling.

2. A welding electrode comprising an alloy of steel containing nickel and a metal to prevent the deposited metal from developing cracks in cooling.

3. A welding electrode comprising an alloy of steel containing nickel and chromium, the nickel being in excess of chromium. o

4. A welding electrode comprising an alloy of steel containing nickel and a metal to prevent the deposited metal from developing cracks in cooling, the amount of' nickel being in excess of the crack preventing metal.

5. A welding electrode comprising an alloy of steel containing nickel, chromium and vanadium. v

6. A welding electrode comprising an alloy of steel containing chromium, vana-.

dium and nickel, the nickel being in excess of the chromium and'vanadium.

7. A welding electrode comprising a steel alloy containing .4 to .6 er cent carbon, 3?; to a} per cent nickel an 4; to 21} pe: cent chromium.

8. The method of electric arc weldin" which consists in passing welding. meta across an are from an electrode containing nickel and chromium, the latter, in such proportion as to prevent cracking, ofthe deposited metal on cooling.

9. The method of electric arc welding which conslsts in passing welding metal across an are from a covered electrode containing nickel and chromium, the latter, in such proportion as to preventcracking of the deposited metal on cooling.

10. The method of electric arc Welding 6 which consists in passing Welding. metal across an are from an electrode containing nickel, chromium and vanadium.

11. The method of electric arc Welding which consists in passing welding metal 10 across an are from a covered electrode containing nickel, chromium and vanadium.

12. A Welding electrode comprising a 1 i CLAUDE J. HULSLAG. 

